Home / 278,463.42-384,288.10-163,721.25

Finding the Fourth Proportional to 278,463.42, 384,288.10 and 163,721.25

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Solution

The fourth proportional to 278,463.42, 384,288.10 and 163,721.25 is: 225,940.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,463.42 : 384,288.10 = 163,721.25 : x
  2. Step 2: Convert to fraction form
    278,463.42/384,288.10 = 163,721.25/x
  3. Step 3: Cross multiply
    278,463.42x = 384,288.10 × 163,721.25
  4. Step 4: Simplify right side
    278,463.42x = 62,916,127,682.82
  5. Step 5: Solve for x
    x = 62,916,127,682.82/278,463.42
  6. Step 6: Final answer
    x = 225,940.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.